Train services into London should be back to normal tomorrow for commuters across Bedfordshire, Hertfordshire and Northamptonshire.
It follows a week of disruptions caused by damage to overhead power lines at Radlett. Network Rail was due to finish the repairs this weekend.
Overhead line problems have again brought rail delays in the Northampton and Milton Keynes areas.
Thousands of train passengers are potentially facing severe delays until the end of the week due to "extensive" damage to power cables.